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Saarland Sabatier, Paul Sachs, Nelly Leonie Sadat, Anwar al- Saguaro Cactus Sailing Ships Saint Augustine, Florida Saint-Gaudens, Augustus Saint Helena Saint Patrick's Cathedral Sakharov, Andrei Dmitriyevich Salamanders --Tiger Salyut 6 San Andreas Fault San Francis de Asís, Misión San Francisco, California San Francisco Bay --Formation of San Salvador, The Bahamas Sandburg, Carl Sanger, Margaret Louise Santa Gertrudis (cattle breed) Santee, Wes Sargasso Sea Satanta Sato, Eisaku Saturn (planet) Saturn (rocket) (King) Saud Saudi Arabia Savannah, Georgia Sayers, Gale Eugene Scaup, Lesser Schurz, Carl Scoter, Surf Scoter, White-Winged Scotland Scotland Yard Scott, Sir Walter Sea Lion, California Sea Lion, Steller Sea of Galilee Seawater Seed Drill --Tull, Jethro	Seeds Segovia, Andrés Selfridge, Thomas Etholen Senefelder, Aloys Sepoy Rebellion Serpentes Seven Wonders of the Ancient World Seward, William H. --Alaska, Purchase of Sharon, Ariel Shays' Rebellion Sheridan, Philip Henry Sherman, Roger Shoveler, Northern Sierra Club --Brower, David Ross Signal Corps, United States Army Sikorsky, Igor Silicon Silistra, Bulgaria Silver Singleton, Benjamin "Pap" Skelton, Richard Bernard "Red" Skink, Great Plains Skylab Program Slater, Samuel Slide Rule Smallpox --Jenner, Edward Smetana, Bedrich Smilodon Smith, John Smith Automobile Company Smoky Mountains National Park Snail Kite Snakes Solar System Sorin, Edward --Notre Dame, University of Soto, Hernando de South Arabia Southampton Slave Revolt Sphinx Moths Spider Monkey, Central American Spiders Spielberg, Steven	Spinning Jenny Spitz, Mark Andrew Sponge, Bath Sprig Sprint The "Spruce Goose" Stafford, Terry --Great Smith Automobile Stamp Act of 1765 Standardbred Horse The Star-Spangled Banner Stars State, United States Department of Statue of Liberty Steam Turbine Engine --Parsons, (Sir) Charles Algernon Steel Plow --Deere, John Stems Sterne, Nicholas Adolphus Stingray, Orangespot Freshwater Stone, Milburn Stork, White Stover, Clara Stover, Russell Stowe, Harriet Beecher Stroud, Robert Stuart, Gilbert Charles Submarine --Holland, John Philip Sudan Sulfur Sullivan, Arthur Seymour Sumner, Charles Sundial Surtsey Island Surveyor Program Swan, Bewick's Swan, Mute Swan, Trumpeter Swan, Tundra Swan, Whistling Swansea, Wales Swayze, John Cameron Swift, Gustavus Franklin Switzer, Veryl